Lennox EL296UHE Series Unit Information

Page 40
Condensate Piping
This unit is designed for either right- or left-side exit of
condensate piping in upow applications. In horizontal
applications, the condensate trap must extend below the
unit. An 8” service clearance is required for the conden-
sate trap. Refer to gure 41 for condensate trap locations.
Figure 49 shows trap assembly using 1/2” PVC or 3/4”
PVC.
NOTE - If necessary the condensate trap may be installed
up to 5’ away from the furnace. Use PVC pipe to connect
trap to furnace condensate outlet. Piping from furnace
must slope down a minimum of 1/4” per ft. toward trap.
1 - Determine which side condensate piping will exit
the unit, location of trap, eld-provided ttings and
length of PVC pipe required to reach available drain.
2 - Use a large at head screw driver or a 1/2” drive
socket extension and remove plug. Install provided
3/4 NPT street elbow tting into cold end header
box. Use Teon tape or appropriate pipe dope.
3 - Install the cap over the clean out opening at the
base of the trap. Secure with clamp. See gure 49.
4 - Install drain trap using appropriate PVC ttings,
glue all joints. Glue the provided drain trap as
shown in gures 49. Route the condensate line to
an open drain. Condensate line must maintain a
1/4” downward slope from the furnace to the drain.
CONDENSATE TRAP AND PLUG LOCATIONS
(Unit shown in upflow position)
NOTE - In upflow applications where side return
sate trap, filter rack must be installed beyond
condensate trap or trap must be re-located to
avoid interference.
Trap
(same on
right side)
Plug
(same on left side)
1-1/2 in.
Rubber
Grommet
FIGURE 41
5 - Figures 44 and 46 show the furnace and evaporator
coil using a separate drain. If necessary the
condensate line from the furnace and evaporator
coil can drain together. See gures, 45, 47 and 48.
Upow furnace (gure 47) - In upow furnace
applications the eld provided vent must be a
minimum 1” to a maximum 2” length above the
condensate drain outlet connection. Any length
above 2” may result in a ooded heat exchanger
if the combined primary drain line were to become
restricted.
Horizontal furnace (gure 48) - In horizontal furnace
applications the eld provided vent must be a
minimum 4” to a maximum 5” length above the
condensate drain outlet connection. Any length
above 5” may result in a ooded heat exchanger
if the combined primary drain line were to become
restricted.
NOTE - In horizontal applications it is recommended
to install a secondary drain pan underneath the unit
and trap assembly.
NOTE - Appropriately sized tubing and barbed tting
may be used for condensate drain. Attach to the
drain on the trap using a hose clamp. See gure 42.
Field Provided Drain Components
T
ubing
Hose Clamp
Barbed Fitting
Elbow
FIGURE 42
CAUTION
Do not use copper tubing or existing copper
condensate lines for drain line.
6 - If unit will be started immediately upon completion
of installation, prime trap per procedure outlined in
Unit Start-Up section.
Condensate line must slope downward away from
the trap to drain. If drain level is above condensate
trap, condensate pump must be used. Condensate
drain line should be routed within the conditioned
space to avoid freezing of condensate and blockage
of drain Page 41 line. If this is not possible, a heat
cable kit may be used on the condensate trap and
line. Heating cable kit is available from Lennox in
various lengths; 6 ft. (1.8m) - kit no. 26K68 and 24
ft. (7.3m) - kit no. 26K69.

Lennox EL296UHE Series Specifications

General

Brand	Lennox
Model	EL296UHE Series
Category	Furnace
Language	English